Lucent Technologies Lineage
®
2000 ECS Battery Plant H569-403
Issue 4 February 1997
Maintenance 5 - 5
•
The LVD circuit has partially failed. Replace the CP5
circuit pack per procedure “LVD/Fuse Board (CP5)
Replacement” below.
Repair and
Replacement
Load Circuit
Breaker or Fuse
Replacement
Procedure: (Refer to Figures 2-3 and 2-4 and T-83118-30
drawing)
1. Obtain a replacement circuit breaker. See paragraph
“Spare Parts.”
2. Verify that the faulty breaker is in the OFF position or that
a blown fuse is actually in the fuse block.
3. Open the hinged panel cover.
4. Measure the voltage at the load connection associated with
the faulty breaker or fuse, to verify that the breaker or fuse
is truly open. The voltage relative to the battery bus bars or
distribution panel bus bar should be approximately the
float voltage of the plant. With a blown fuse, the indicating
fuse can be replaced to verify that the fuse is truly open. If
the faulty breaker or fuse is, in fact, still closed, the load
equipment which it powers must be shut down so that no
current flows through the breaker/fuse arrangement during
the following replacement steps.
5. Disassemble the faulty breaker from the panel or remove
the load fuse and indicating fuse from the fuse block.
6. Switch the new circuit breaker, if applicable, to the OFF
position before plugging it in.
7. Assemble the new breaker or fuse, ensuring that line, load
and alarm connectors are properly mated.
Note
Procedures in this paragraph may cause power alarms to be
issued temporarily. Notify the alarm reporting center before
starting any repair procedure.
DANGER
Do not attempt to unplug a circuit breaker which may be
carrying current. Arcing may result in personnel injury and
equipment damage.